2656001251 has 16 divisors (see below), whose sum is σ = 2715672960. Its totient is φ = 2597137920.

The previous prime is 2656001219. The next prime is 2656001321. The reversal of 2656001251 is 1521006562.

It is a cyclic number.

It is not a de Polignac number, because 2656001251 - 2⁵ = 2656001219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656001351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5761161 + ... + 5761621.

It is an arithmetic number, because the mean of its divisors is an integer number (169729560).

Almost surely, 2^2656001251 is an apocalyptic number.

2656001251 is a deficient number, since it is larger than the sum of its proper divisors (59671709).

2656001251 is a wasteful number, since it uses less digits than its factorization.

2656001251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 2656001251 is about 51536.4070439529. The cubic root of 2656001251 is about 1384.8713319543.

The spelling of 2656001251 in words is "two billion, six hundred fifty-six million, one thousand, two hundred fifty-one".